assume cs:code
code segment
	start:
		mov ax,0B800H
		mov es,ax
		mov di,160*12
		mov bx,offset se-offset s
		mov cx,80
		s:
			mov byte ptr es:[di],"!"
			add di,2
			int 7CH
		se:	nop
		mov ax,4C00H
		int 21H
code ends
end start
